Mining
Raiseboring Tools
Tooling for raiseboring, where a pilot hole is drilled down to a lower level and then reamed back upwards to full shaft diameter. It is how ventilation raises, ore passes and service shafts are made without drill-and-blast.
Mining
Tooling for raiseboring, where a pilot hole is drilled down to a lower level and then reamed back upwards to full shaft diameter. It is how ventilation raises, ore passes and service shafts are made without drill-and-blast.